Overall, I thought the chapter was great. The one thing that I wanted earlier was to see some Elixer code. I was chomping at the bit to so some code and when you final show some, it is just adding two numbers together. I'd like it better if you showed some sweet code right off the bat.

If I were you I would mention Jose Valim's credentials. Knowing that is in a core contributor to Rails helps explain the aesthetics of Elixer.

As someone totally new to the language, I was confused as to how actors related to Erlang processes. Maybe this is not an important point this early in the book, but I was confused by it.